It's bad but I have seen videos of worse situations. One a 747 that actually dragged a rather large portion of its wing-tip on the ground before the pilot righted it and got it straightened up. It makes me wonder why the system on the B-52s that align the landing gear with the direction of flight in cross-wind landings has never made it into the civilian sector.
We parked one night at Ft. Stewart and everything was fine. We got up the next morning, about six hours later, and the tank had sunk into the ground to its belly.
The whole point of crossing the tow cables when hooking them up is so that the tank being towed is easier to turn. As for stopping, unless it is a significantly steep incline, the towed tanks weight will bring it to a stop quite nicely.